<template>
  <div class="xtx-cart-page">
    <div class="container">
        <!-- 面包屑导航 -->
      <XtxBread>
        <XtxBreadItem to="/">首页</XtxBreadItem>
        <XtxBreadItem>购物车</XtxBreadItem>
      </XtxBread>
      <!-- 购物车列表 -->
      <div class="cart">
        <table>
          <thead>
            <tr>
              <!-- checkbox不是原生的, 需要控制modelValue传入值来决定它是否勾选 -->
              <th width="120"><XtxCheckbox @change="changeAllFn" :modelValue="$store.getters['cart/isCheckAll']">全选</XtxCheckbox></th>
              <th width="400">商品信息</th>
              <th width="220">单价</th>
              <th width="180">数量</th>
              <th width="180">小计</th>
              <th width="140">操作</th>
            </tr>
          </thead>
          <!-- 有效商品 -->
          <tbody>
            <tr v-for="item in $store.getters['cart/validList']" :key="item.skuId">
              <!-- 自定义事件后面的函数不建议写()传递, 默认下面接收到子组件传出来的值 -->
              <!-- 非要写的话子组件传出来的值接收不到的, 写了()穿进去的值就给下来自定义事件处理函数
              解决方案1: 绑定事件时, 用$event来手动接收, 然后在传递子组件传出来的值(布尔值)->事件对象传给下面的函数
              解决方案2: 绑定事件时, 给一个函数, 在函数里手动调用接收并传递到下面 -->
              <!-- <td><XtxCheckbox v-model="item.selected" @change="changeSelFn(item, $event)"/></td> -->
              <td><XtxCheckbox v-model="item.selected" @change="(cVal) => changeSelFn(item, cVal)"/></td>
              <td>
                <div class="goods">
                  <RouterLink :to="`/goods?id=${item.id}`">
                  <img :src="item.mainPictures ? item.mainPictures[0] : item.picture" alt=""></RouterLink>
                  <div>
                    <p class="name ellipsis">{{ item.name }}</p>
                    <p class="attr">{{ item.specsText }}</p>
                  </div>
                </div>
              </td>
              <td class="tc">
                <p>&yen;{{ item.price }}</p>
                <p>比加入时降价 <span class="red">&yen;{{ item.nowPrice ? item.nowPrice - item.price : item.oldPrice - item.price }}</span></p>
              </td>
              <td class="tc">
                <XtxNumbox v-model="item.count"/>
              </td>
              <td class="tc"><p class="f16 red">&yen;{{ item.count * item.price }}</p></td>
              <td class="tc">
                <p><a href="javascript:;">移入收藏夹</a></p>
                <p><a @click="delFn(item)" class="green" href="javascript:;">删除</a></p>
                <p><a href="javascript:;">找相似</a></p>
              </td>
            </tr>
          </tbody>
        </table>
      </div>
      <!-- 操作栏 -->
      <div class="action">
        <div class="batch">
          <XtxCheckbox @change="changeAllFn" :modelValue="$store.getters['cart/isCheckAll']">全选</XtxCheckbox>
          <a href="javascript:;">删除商品</a>
        </div>
        <div class="total">
           共 {{ $store.getters['cart/validTotal'] }} 件商品，已选择 {{ $store.getters['cart/isSelAmount'] }}件，商品合计：
          <span class="red">¥{{ $store.getters['cart/isSelTotal'] }}</span>
          <XtxButton type="primary" @click="toOrderFn">下单结算</XtxButton>
        </div>
      </div>
    </div>
  </div>
</template>
<script>
import { useStore } from 'vuex'
import { ref } from 'vue'
import { useRouter } from 'vue-router'
import Message from 'erabbit-ui/packages/components/Message'
import Confirm from 'erabbit-ui/packages/components/Confirm'
export default {
  name: 'XtxCartPage',
  setup () {
    const store = useStore()
    const router = useRouter()
    const isAll = ref(false)
    // 每行商品左边的复选框选中改变事件
    const changeSelFn = (item, bool) => {
      store.dispatch('cart/updateCartActions', {
        skuId: item.skuId,
        selected: bool
      })
    }
    if (store.state.user.profile.token) {
      store.dispatch('cart/getAllCartListActions')
    }
    // 全选->改变事件
    const changeAllFn = (bool) => {
      store.dispatch('cart/checkAllCartActions', bool)
    }
    // 删除某行商品
    const delFn = (item) => {
      store.dispatch('cart/deleteActions', item)
    }

    // 去结算按钮->点击事件
    const toOrderFn = () => {
      if (store.getters['cart/isSelAmount'] === 0) {
        Message({
          type: 'warn',
          text: '请选择商品'
        })
      } else if (!store.state.user.profile.token) {
        Confirm({
          title: '提示',
          text: '去结算页请先登录'
        }).then(() => {
          router.push('/login')
        })
      } else {
        // 跳转到结算页面
        router.push('/user/order')
      }
    }

    return {
      changeSelFn,
      changeAllFn,
      isAll,
      delFn,
      toOrderFn
    }
  }
}
</script>
<style scoped lang="less">
.tc {
  text-align: center;
  .xtx-numbox {
    margin: 0 auto;
    width: 120px;
  }
}
.red {
  color: var(--price-color);
}
.green {
  color: var(--xtx-color);
}
.f16 {
  font-size: 16px;
}
.goods {
  display: flex;
  align-items: center;
  img {
    width: 100px;
    height: 100px;
  }
  > div {
    width: 280px;
    font-size: 16px;
    padding-left: 10px;
    .attr {
      font-size: 14px;
      color: #999;
    }
  }
}
.action {
  display: flex;
  background: #fff;
  margin-top: 20px;
  height: 80px;
  align-items: center;
  font-size: 16px;
  justify-content: space-between;
  padding: 0 30px;
  .xtx-checkbox {
    color: #999;
  }
  .batch {
    a {
      margin-left: 20px;
    }
  }
  .red {
    font-size: 18px;
    margin-right: 20px;
    font-weight: bold;
  }
}
.tit {
  color: #666;
  font-size: 16px;
  font-weight: normal;
  line-height: 50px;
}
.xtx-cart-page {
  .cart {
    background: #fff;
    color: #666;
    table {
      border-spacing: 0;
      border-collapse: collapse;
      line-height: 24px;
      th,td{
        padding: 10px;
        border-bottom: 1px solid #f5f5f5;
        &:first-child {
          text-align: left;
          padding-left: 30px;
          color: #999;
        }
      }
      th {
        font-size: 16px;
        font-weight: normal;
        line-height: 50px;
      }
    }
  }
}
</style>
